Early signs of pregnancy ?

I have had the worst back pain of my life which is something I don’t experience with my period. I have also felt sick recently but I’ve been trying to explain it off as maybe I’m getting the flu. But it doesn’t feel like a sickness and tends to come and go. Also, I have been way more tired recently I took a nap during the day and went to bed early and slept in. Even my s/o noticed I’ve been really tired. I don’t want to get my hopes up I feel like it’s too early to be able to experience these things. I feel like maybe I’m mistaking things for symptoms in hope of being pregnant. I’m not sure but any thoughts would help. I’m currently 6dpo, a week from my period.